Linux basic commands

2. Please copy the/etc/init.d/iptables to the/root/directory and rename it to Test.txt:

   Cp/etc/init.d/iptables Test.txt

   MV Iptables Test.txt

4. Open Test.txt with vim and set line number:

   Vim Test.txt

   : Set Number

6. Move down, up, left, and right 5 characters: arrows or j,k,h,l

8. Two pages down and up, respectively: ctrl+f; Ctrl+b; PageUp; PageDown

10. Move the cursor to line 49th: 49G

12. Move the cursor to the end of the line, and then move to the beginning: shift+4; 0 or Shift+6

14. Move to the last line of the Test.txt file: G

16. Move to the first line of the file: GG

18. Search for the iptables that appear in the file and count the total number of occurrences:

    Gg

    /iptables Enter, press N to find the next

20. Replace the iptables from the first line to the third row with the iptable:

    : 1,3s/iptables/iptable/g; #不加g仅替换每一行第一个, add g to replace all

22. Restore previous action: U

24. Replace all iptables in the entire file with iptable:

    : 1, $s/iptables/iptable/g

26. Move the cursor to line 25 and delete the character "$":

    25G

    Press I to enter edit mode to delete.

28. Restore previous action: U

30. Delete Line 50th:

    50G

    Dd

32. Restore previous action: U

34. Delete everything from 37 rows to 42 rows:

    37G

    6dd

36. Restore previous action: U

38. Copy the 48 lines and paste them below the 52 lines:

    48g;yy;52g;p; P Copy the data from the next line of the cursor paste, p from the previous line

40. Restore previous action (press two times u)

42. Copy the contents from 37 rows to 42 lines and paste them above the 44 lines:

    37G

    6yy

    44G

    P

44. Restore previous action (press two times u)

46. Move the contents of rows 37 to 42 below the 19 line:

    37G

    6dd

    19G

    P

48. Restore previous action (press two times u)

50. Move the cursor to the first line and change the/bin/sh to/bin/bash:

    Gg

    Press I to enter edit mode to modify

52. Insert a new line below the first line and enter "# hello!" ：

    Press the letter O and enter "hello!"

54. Save the document and exit:

    : wq!

This article is from the "Llinux Command Contact" blog, please be sure to keep this source http://2767215.blog.51cto.com/2757215/1948226

Linux basic commands